CN217838425U - Pressurized dissolved air flotation machine for advanced wastewater treatment - Google Patents
Pressurized dissolved air flotation machine for advanced wastewater treatment Download PDFInfo
- Publication number
- CN217838425U CN217838425U CN202222029945.9U CN202222029945U CN217838425U CN 217838425 U CN217838425 U CN 217838425U CN 202222029945 U CN202222029945 U CN 202222029945U CN 217838425 U CN217838425 U CN 217838425U
- Authority
- CN
- China
- Prior art keywords
- air
- air supporting
- driving motor
- sewage
- main part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Physical Water Treatments (AREA)
Abstract
The utility model discloses a sewage advanced treatment dissolves gas air supporting machine with pressurization formula relates to sewage treatment device technical field, specifically is a sewage advanced treatment dissolves gas air supporting machine with pressurization formula, including air supporting owner body, the inside fixed mounting of air supporting owner body has the division board, and air supporting owner body is inside to be provided with teeter chamber and air supporting room through the division board separation, the detachable sealed top cap that is located the teeter chamber top of installing in top of air supporting owner body. This sewage advanced treatment dissolves gas air supporting machine with pressurization formula sets up multiunit one-way air outlet valve pipe through the top at the outlet duct to top and week side at one-way air outlet valve pipe set up a plurality of atomizing nozzle, can carry out the multiple spot air feed in air supporting indoor portion, but guarantee that gaseous evenly distributed is in sewage, improve the clearance to pollutant in the sewage, give vent to anger through setting up atomizing nozzle in addition, can reduce the volume of bubble, make the bubble can fully adsorb the pollutant.
Description
Technical Field
The utility model relates to a sewage treatment device technical field specifically is a sewage advanced treatment dissolves gas air supporting machine with pressurization formula.
Background
The air floating machine is water treatment equipment which generates a large amount of micro bubbles in water by an air dissolving system, leads the air to be attached to suspended particles in a highly dispersed micro bubble form, causes the density to be lower than the water state, and leads the air to float on the water surface by utilizing the buoyancy principle, thereby realizing solid-liquid separation. The air flotation machine is divided into a super-effect shallow air flotation machine, a cavitation air flotation machine and a advection type air flotation machine. At present, the method is applied to the aspects of water supply, industrial wastewater and municipal sewage treatment. The air floatation machine has the advantages that the solid-liquid separation equipment has the characteristics of low investment, extremely small floor area, high automation degree, convenient operation and management and the like.
At present common air supporting machine adopts the air compressor machine to carry out the air feed usually, the control system of air supporting machine is with the gaseous direct air-floating chamber that passes through the trachea of leading to of air compressor machine production, but because gaseous along a department concentrate admit air, lead to gaseous not enough even in sewage distribution, the position gas content that sewage is close to the gas outlet is higher, the position gas content who keeps away from the gas outlet is lower, lead to the pollutant removal rate in the sewage low, in addition, gaseous direct sewage that gets into the air-floating chamber along the trachea, the bubble volume in sewage under this kind of state is great, the bubble can not carry out abundant absorption just come-up to the sewage surface to the pollutant, cause the pollutant adsorption rate not high, we propose a sewage deep treatment with pressurization formula dissolved air supporting machine for this reason and solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sewage advanced treatment dissolves gas air supporting machine with pressurization formula to the not enough of prior art, has solved the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a pressurized dissolved air flotation machine for advanced wastewater treatment comprises a flotation machine main body, a partition plate is fixedly arranged inside the flotation machine main body, and the inner part of the air floating machine main body is provided with a stirring chamber and an air floating chamber by a partition plate in a separating way, the top of the air floating machine main body is detachably provided with a sealing top cover positioned above the stirring chamber, a first driving motor is fixedly arranged at the top of the sealing top cover, an output shaft of the first driving motor is fixedly connected with a stirring rod, the first driving motor drives the stirring rod to rotate to stir the sewage, so that pollutants in the sewage are distributed more uniformly, the left side of the air flotation machine main body is fixedly connected with a water inlet, the right side is fixedly connected with a water outlet, an air outlet pipe is movably arranged below the inner part of the air flotation chamber, and the top of the air outlet pipe is fixedly provided with a one-way air outlet valve pipe, the outside of the one-way air outlet valve pipe is provided with an atomizing nozzle, by arranging a plurality of groups of one-way air outlet valve pipes on the top of the air outlet pipe and arranging a plurality of atomizing nozzles on the top and the periphery of the one-way air outlet valve pipe, the multi-point air supply can be carried out in the air flotation chamber to ensure that the air can be uniformly distributed in the sewage, the front surface of the air outlet pipe is fixedly communicated with a connecting pipe, the right side of the air flotation machine main body is fixedly provided with an air compressor, and the air outlet of the air compressor is fixedly connected with an air duct which is movably connected with a connecting pipe, the front side of the air flotation machine main body is fixedly provided with a second driving motor, and the output shaft of the second driving motor is provided with a first-stage driving rod and a second-stage driving rod of the second driving motor which are matched with the connecting pipe, the top of the air flotation machine main body is provided with a slag scraping mechanism positioned above the air flotation chamber, and pollutants floated out of the air can be discharged through the operation of the slag scraping mechanism.
Preferably, the height of the partition plate is smaller than the height value of the inner part of the air flotation machine main body, sewage after being stirred by the stirring chamber can enter the air flotation chamber along the notch at the bottom of the partition plate, the bottom of the partition plate is provided with a notch, and the sewage in the stirring chamber can enter the air flotation chamber along the notch at the bottom of the partition plate.
Preferably, the left and right sides of outlet duct and the inner wall of air supporting chamber are provided with the direction slide rail of mutually supporting, the bottom fixed mounting of air supporting chamber has two sets of waterproof supersonic generator that are located the outlet duct below, produces high-frequency vibration through waterproof supersonic generator work, can make the impurity on the atomizing nozzle drop, avoids the atomizing nozzle jam to appear.
Preferably, the crisscross distribution of one-way air outlet valve pipe of side around the outlet duct top, the top and the equal fixed mounting in week of one-way air outlet valve pipe have atomizing nozzle, give vent to anger through setting up atomizing nozzle, can reduce the volume of bubble, make the bubble can fully adsorb the pollutant, further improve the pollutant clearance.
Preferably, the fixed cover is equipped with second driving motor one-level transfer line on the output shaft of second driving motor one-level transfer line, and the tip swing joint of second driving motor one-level transfer line has the second grade transfer line, drives second driving motor one-level transfer line and rotates to drive connecting pipe and outlet duct reciprocating motion through the transmission of second grade transfer line, make atomizing nozzle spun gas can fully be merged into in the sewage, further improve the homogeneity of bubble distribution in sewage, the one end and the connecting pipe swing joint of second driving motor one-level transfer line are kept away from to the second grade transfer line, through second driving motor one-level transfer line, second grade transfer line transmission, when driving second driving motor one-level transfer line and rotating, can drive connecting pipe and outlet duct reciprocating motion.
Preferably, scrape sediment mechanism and include drive roller, conveyor belt, motor, drive roller movable mounting is inside the air supporting machine main part, and conveyor belt activity suit is outside in the drive roller, and the conveyor belt outside is provided with evenly distributed's scraper blade, after gaseous drive pollutant come-up, drives drive roller and conveyor belt counter-clockwise rotation through the motor, can scrape the pollutant to scum mouth department discharge through the outside scraper blade of conveyor belt, air supporting machine main part right side be provided with scraper blade complex scum mouth.
The utility model provides a sewage advanced treatment dissolves gas air supporting machine with pressurization formula possesses following beneficial effect:
1. this sewage advanced treatment dissolves gas air supporting machine with pressurization formula, top through at the outlet duct sets up the one-way air outlet valve pipe of multiunit, and top and week side at the one-way air outlet valve pipe set up a plurality of atomizing nozzle, can carry out the multiple spot air feed in air supporting indoor portion, but guarantee that gaseous evenly distributed is in sewage, improve the clearance to pollutant in the sewage, give vent to anger through setting up atomizing nozzle in addition, can reduce the volume of bubble, make the bubble can fully adsorb the pollutant, further improve the pollutant clearance.
2. This sewage advanced treatment dissolves gas air supporting machine with pressurization formula rotates through driving second driving motor one-level transfer line, drives connecting pipe and outlet duct reciprocating motion through the second grade transfer line, makes atomizing nozzle spun gas fully integrate into in the sewage, further improves the homogeneity of bubble distribution in sewage, guarantees that the bubble can fully adsorb the pollutant, further improves the pollutant clearance.
Drawings
FIG. 1 is a schematic structural view of the present invention after being integrally assembled;
FIG. 2 is a schematic structural view of the main body section of the air floatation body of the present invention;
FIG. 3 is a schematic structural view of the front side of the main body of the air flotation device of the present invention;
fig. 4 is the structure schematic diagram of the air outlet pipe of the utility model.
In the figure: 1. a main body of the air flotation machine; 2. a partition plate; 3. sealing the top cover; 4. a first drive motor; 5. a stirring rod; 6. a water inlet; 7. a slag scraping mechanism; 8. a water outlet; 9. an air outlet pipe; 10. a guide slide rail; 11. a waterproof ultrasonic generator; 12. a one-way air outlet valve tube; 13. an atomizing nozzle; 14. an air compressor; 15. an air duct; 16. a connecting pipe; 17. a second drive motor; 18. a primary transmission rod; 19. and a secondary transmission rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, the present invention provides a technical solution: a pressurized dissolved air flotation machine for advanced sewage treatment comprises a flotation machine main body 1, a partition plate 2 is fixedly installed inside the flotation machine main body 1, a stirring chamber and an air flotation chamber are arranged inside the flotation machine main body 1 in a separated mode through the partition plate 2, a sealing top cover 3 positioned above the stirring chamber is detachably installed at the top of the flotation machine main body 1, a first driving motor 4 is fixedly installed at the top of the sealing top cover 3, a stirring rod 5 is fixedly connected onto an output shaft of the first driving motor 4, the stirring rod 5 is driven to rotate by the first driving motor 4 to stir sewage, pollutants in the sewage are distributed more uniformly, a water inlet 6 is fixedly connected to the left side of the flotation machine main body 1, a water outlet 8 is fixedly connected to the right side, an air outlet pipe 9 is movably installed below the inside the air flotation chamber, a one-way air outlet valve pipe 12 is fixedly installed at the top of the air outlet pipe 9, atomizing nozzles 13 are arranged outside the one-way air outlet valve pipe 12 is arranged at the top of the air outlet pipe 9, a plurality of groups of one-way air outlet valve pipes 12 are arranged at the top of the air outlet pipe 9, a connecting pipe 16 is arranged on a second-way air compressor 16 fixedly installed on a front side of a second air outlet pipe 16 fixedly connected with a second-way air compressor 16, a second-way air compressor 16 fixed air inlet pipe connected with a second-way air inlet pipe 16, the top of air supporting machine main part 1 is provided with the sediment mechanism 7 of scraping that is located the air supporting room top, the accessible is scraped the pollutant discharge that 7 work of sediment mechanism will float out of the air, it includes the drive roller to scrape sediment mechanism 7, conveyor belt, including a motor, an end cap, a controller, and a cover plate, drive roller movable mounting is inside air supporting machine main part 1, conveyor belt activity suit is outside in the drive roller, the conveyor belt outside is provided with evenly distributed's scraper blade, after gaseous drive pollutant come-up, drive roller and conveyor belt counter-clockwise turning are driven through the motor, can scrape the pollutant to the discharge of sediment mouth department through the outside scraper blade of conveyor belt, 1 right side of air supporting machine main part be provided with scraper blade complex sediment mouth.
Referring to fig. 2 and 4, the height of the partition plate 2 is smaller than the height inside the air flotation machine main body 1, sewage stirred by the stirring chamber can enter the air flotation chamber along the notch at the bottom of the partition plate 2, the bottom of the partition plate 2 is provided with a notch, sewage in the stirring chamber can enter the air flotation chamber along the notch at the bottom of the partition plate 2, the left side and the right side of the air outlet pipe 9 and the inner wall of the air flotation chamber are provided with guide slide rails 10 which are matched with each other, the bottom of the air flotation chamber is fixedly provided with two sets of waterproof ultrasonic generators 11 which are positioned below the air outlet pipe 9, high-frequency vibration is generated by the operation of the waterproof ultrasonic generators 11, impurities on the atomizing nozzles 13 can fall off, and blockage of the atomizing nozzles 13 is avoided.
Referring to fig. 4, the unidirectional air outlet valve tubes 12 on the front and rear sides of the top of the air outlet tube 9 are distributed in a staggered manner, the atomizing nozzles 13 are fixedly installed on the top and the peripheral sides of the unidirectional air outlet valve tubes 12, and the size of the bubbles can be reduced by arranging the atomizing nozzles 13 to discharge air, so that the bubbles can fully adsorb pollutants, and the removal rate of the pollutants is further improved.
Referring to fig. 3, a second driving motor primary transmission rod 18 is fixedly sleeved on an output shaft of the second driving motor primary transmission rod 18, and an end portion of the second driving motor primary transmission rod 18 is movably connected with a secondary transmission rod 19, the second driving motor 17 drives the second driving motor primary transmission rod 18 to rotate, and drives the connecting pipe 16 and the air outlet pipe 9 to reciprocate through the transmission of the secondary transmission rod 19, so that the gas sprayed from the atomizing nozzle 13 can be fully dissolved in the sewage, the uniformity of the bubbles distributed in the sewage is further improved, one end of the secondary transmission rod 19, which is far away from the second driving motor primary transmission rod 18, is movably connected with the connecting pipe 16, and is driven by the second driving motor primary transmission rod 18 and the secondary transmission rod 19, and when the second driving motor 17 drives the second driving motor primary transmission rod 18 to rotate, the connecting pipe 16 and the air outlet pipe 9 can be driven to reciprocate.
It is required to explain, the utility model discloses used first driving motor 4, second driving motor 17, waterproof supersonic generator 11, one-way air outlet valve pipe 12, air compressor machine 14 all adopt prior art, and the skilled person in the art can select as required, as long as can realize the technical scheme of the utility model can, do not specially limit here.
In summary, when the pressurized dissolved air flotation machine for advanced wastewater treatment is used, wastewater is guided into a stirring chamber in a main body 1 of the flotation machine along a water inlet 6, a first driving motor 4 drives a stirring rod 5 to rotate to stir the wastewater, pollutants in the wastewater are distributed more uniformly, the wastewater enters the air flotation chamber along a gap at the bottom of a partition plate 2 after being stirred, an air compressor 14 works to generate gas, the gas is guided into a connecting pipe 16 and an air outlet pipe 9 along an air guide pipe 15, enters a one-way air outlet valve pipe 12 at the top of the air outlet pipe 9, and is finally sprayed out along atomizing nozzles 13 at the top and on the periphery of the one-way air outlet valve pipe 12 to perform air flotation treatment on the pollutants in the wastewater, meanwhile, when the atomizing nozzles 13 are used for air outlet, a second driving motor 17 drives a first-stage transmission rod 18 of a second driving motor to rotate, and drives the connecting pipe 16 and the air outlet pipe 9 to reciprocate through a second-stage transmission rod 19, so that the gas can be uniformly distributed in the wastewater, the wastewater after air flotation is scraped by a residue scraping mechanism 7, and the wastewater after being treated is discharged along a water outlet 8, and the wastewater can be treated.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a sewage advanced treatment dissolves gas air supporting machine with pressurization formula, includes air supporting quick-witted main part (1), the inside fixed mounting of air supporting quick-witted main part (1) has division board (2), and air supporting quick-witted main part (1) is inside to be provided with teeter chamber and air supporting room through division board (2) separation, the detachable sealed top cap (3) that are located the teeter chamber top of installing in top of air supporting quick-witted main part (1), its characterized in that: the utility model discloses a pneumatic flotation device, including sealed top cap (3), the top fixed mounting of sealed top cap (3) has first driving motor (4), and fixedly connected with puddler (5) on the output shaft of first driving motor (4), the left side fixedly connected with water inlet (6) of air supporting machine main part (1), right side fixedly connected with delivery port (8), the inside below movable mounting of air supporting room has outlet duct (9), and the top fixed mounting of outlet duct (9) has one-way air outlet valve pipe (12), the outside of one-way air outlet valve pipe (12) is provided with atomizing nozzle (13), the front fixed intercommunication of outlet duct (9) has connecting pipe (16), the right side fixed mounting of air supporting machine main part (1) has air compressor machine (14), and fixedly connected with air duct (15) on the gas outlet of air compressor machine (14), air duct (15) and connecting pipe (16) swing joint, the front fixed mounting of air supporting machine main part (1) has second driving motor (17), and is provided with connecting pipe (16) complex second driving motor one-level transfer line (18), second grade transfer line (19) on the output shaft of second driving motor (17), the top of air supporting machine main part (1) is provided with the superficial sediment in air supporting room (7) and scrapes the sediment mechanism.
2. The pressurized dissolved air flotation machine for advanced wastewater treatment as claimed in claim 1, wherein: the height of the partition plate (2) is smaller than the height value inside the air flotation machine main body (1), a notch is formed in the bottom of the partition plate (2), and sewage in the stirring chamber can enter the air flotation chamber along the notch in the bottom of the partition plate (2).
3. The pressurized dissolved air flotation machine for advanced wastewater treatment as claimed in claim 1, wherein: the left and right sides of outlet duct (9) and the inner wall of air supporting chamber are provided with guide slide rail (10) of mutually supporting, the bottom fixed mounting of air supporting chamber has two sets of waterproof supersonic generator (11) that are located outlet duct (9) below.
4. The pressurized dissolved air flotation machine for advanced wastewater treatment as claimed in claim 1, wherein: the one-way air outlet valve pipe (12) of side distribute in a staggered way around outlet duct (9) top, the top and all sides of one-way air outlet valve pipe (12) all fixed mounting have atomizing nozzle (13).
5. The pressurized dissolved air flotation machine for advanced wastewater treatment as claimed in claim 1, wherein: the output shaft of the first-level transmission rod (18) of the second driving motor is fixedly sleeved with the first-level transmission rod (18) of the second driving motor, the end part of the first-level transmission rod (18) of the second driving motor is movably connected with a second-level transmission rod (19), and one end, far away from the first-level transmission rod (18) of the second driving motor, of the second-level transmission rod (19) is movably connected with the connecting pipe (16).
6. The pressurized dissolved air flotation machine for advanced wastewater treatment as claimed in claim 1, wherein: scrape sediment mechanism (7) including drive roller, conveyor belt, motor, drive roller movable mounting is inside air supporting machine main part (1), and conveyor belt activity suit is outside in the drive roller, and the conveyor belt outside is provided with evenly distributed's scraper blade, air supporting machine main part (1) right side be provided with scraper blade complex row sediment mouth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222029945.9U CN217838425U (en) | 2022-08-03 | 2022-08-03 | Pressurized dissolved air flotation machine for advanced wastewater treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222029945.9U CN217838425U (en) | 2022-08-03 | 2022-08-03 | Pressurized dissolved air flotation machine for advanced wastewater treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN217838425U true CN217838425U (en) | 2022-11-18 |
Family
ID=84011839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202222029945.9U Active CN217838425U (en) | 2022-08-03 | 2022-08-03 | Pressurized dissolved air flotation machine for advanced wastewater treatment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN217838425U (en) |
-
2022
- 2022-08-03 CN CN202222029945.9U patent/CN217838425U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN209997838U (en) | surface spraying equipment for plastic products | |
CN214360361U (en) | Industrial sewage rapid treatment air supporting device | |
CN117463085A (en) | Can clear up filter screen and avoid remaining exhaust-gas treatment ware of impurity through blowback | |
CN217838425U (en) | Pressurized dissolved air flotation machine for advanced wastewater treatment | |
CN117700056A (en) | Multistage treatment device for continuous treatment of industrial wastewater | |
CN112934484B (en) | Fly ash flotation separation equipment with turbulent flow type air dispersing device | |
CN113816456A (en) | Domestic sewage vibrates broken formula air supporting edulcoration equipment | |
CN113843052A (en) | Fly ash flotation separation equipment | |
CN208933026U (en) | DAF air dissolved pump air bearing for sewage treatment | |
CN215924494U (en) | Full-automatic air supporting machine of pharmaceutical factory | |
CN114920320B (en) | Waste water and tar recovery device for coking plant | |
CN214936392U (en) | Novel denitrification deep bed filter | |
CN213700314U (en) | Full-automatic iron remover for slurry | |
CN109806753B (en) | Reduction circulation desulfurization device and desulfurization method | |
CN113828142A (en) | High-flow-rate low-gas-separation desulfurization tower | |
CN112827280A (en) | Conical cooling and dedusting integrated system for treating waste gas | |
CN209143749U (en) | A kind of efficient air-floating processing unit | |
CN109806767B (en) | Desulfurization waste liquid treatment and recycling system and treatment and recycling method | |
CN109772595B (en) | Subregion flotation system | |
CN201343450Y (en) | Dedicated reactor for preparing manganese sulfate solution with leached pyrolusite from sulfur dioxide gas | |
CN207016569U (en) | A kind of mushroom head for being used to fluidize cyclic aeration device | |
CN107416935B (en) | Rotary air floatation tank | |
CN214811740U (en) | Energy-saving and environment-friendly flotation machine for molybdenum ore dressing | |
CN214570889U (en) | Dissolved air flotation machine with excellent use performance | |
CN214880834U (en) | Sewage treatment plant that treatment effeciency is high |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |